Unauthenticated Blind SQL Injection in mb24api by mbconnectline
CVE-2026-33616

7.5HIGH

Key Information:

Vendor

Mb Connect Line

Status
Mbconnect24
Mymbconnect24
Vendor
CVE Published:
2 April 2026

What is CVE-2026-33616?

An unauthenticated remote attacker can exploit a blind SQL injection vulnerability in the mb24api endpoint due to improper handling of SQL command elements. This flaw could allow attackers to gain unauthorized access to sensitive data, leading to a potential loss of confidentiality and posing considerable risks to affected systems.

Affected Version(s)

mbCONNECT24 0.0.0 <= 2.19.4

mymbCONNECT24 0.0.0 <= 2.19.4

References

https://certvde.com/de/advisories/VDE-2026-030
vendor-advisory
https://mbconnectline.csaf-tp.certvde.com/.well-known/csa...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Moritz Abrell, Christian Zäske from SySS GmbH
.